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Zhu MY, Gong ZS, Feng HP, Zhang QY, Liu K, Lin B, Zhang MN, Lin HF, Li MS. Vincosamide Has a Function for Inhibiting Malignant Behaviors of Hepatocellular Carcinoma Cells. World J Oncol 2022; 13:272-288. [PMID: 36406198 PMCID: PMC9635790 DOI: 10.14740/wjon1514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 08/13/2022] [Indexed: 08/30/2023] Open
Abstract
BACKGROUND Vincosamide (Vinco) was first identified in the methanolic extract of the leaves of Psychotria leiocarpa, and Vinco has important anti-inflammatory effects and activity against cholinesterase, Vinco also has a trait to anti-tumor. However, whether Vinco can inhibit the malignant behaviors of hepatocellular carcinoma (HCC) cells is still unclear. In the present study, we explored the role of Vinco in suppressing the malignant behaviors of HCC cells. METHODS MTT (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl-tetrazolium bromide), trypan blue exclusion assay, the Cell Counting Kit (CCK)-8 and flow cytometric analysis were applied to detect the proliferation and apoptosis of HCC cells; electron microscopy was performed to observe the change of cellular mitochondrial morphology; scratch repair and Transwell assays were used to analyze the migration and invasion of HCC cells; expression and localization of proteins were detected by laser confocal microscopy and Western blotting; the growth of the cancer cells in vivo was assessed in a mouse tumorous model. RESULTS At a dose of 10 - 80 µg/mL, Vinco inhibited the proliferation, migration, invasion and promoted apoptosis of HCC cells in a dose-dependent manner but had low cytotoxicity effect on normal liver cells. Additionally, 80 µg/mL of Vinco could significantly disrupt the morphology of mitochondria, suppress the migration and invasion of HCC cells. The growth of HCC cells in the animal tumorous model was significantly inhibited after treatment with Vinco (10 mg/kg/day) for 3 days. The results of the present study indicated that Vinco (10 - 80 µg/mL) played a role in activating caspase-3, promoting the expression of phosphate and tension homology deleted on chromosome 10 (PTEN), and inhibiting the phosphorylation of AKT (Ser473) and mTOR (Thr2448); Vinco also has a trait for suppressing the expression of CXCR4, Src, MMP9, EpCAM, Ras, Oct4 and cancer stem cell "stemness markers" CD133 and CD44 in HCC cells. CONCLUSIONS Vinco has a role in inhibiting the malignant behaviors of HCC cells; the role molecular mechanism of Vinco may be involved in restraining expression of the growth-, metastasis-related factors, such as Src, Ras, MMP9, EpCAM, CXCR4; activating the activity of caspase-3 and blocking PI3K/AKT signaling pathway. Thus, Vinco should be considered as a new chemotherapy agent for HCC patients.
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Affiliation(s)
- Ming Yue Zhu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
- These authors contributed equally to this work and are co-first authors
| | - Zhi Sun Gong
- Department of Radiotherapy, Second Affiliated Hospital, Hainan Medical College, Haikou, China
- These authors contributed equally to this work and are co-first authors
| | - Hai Peng Feng
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
- These authors contributed equally to this work and are co-first authors
| | - Qiu Yue Zhang
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
| | - Kun Liu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
| | - Bo Lin
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
| | - Min Ni Zhang
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
| | - Hai Feng Lin
- Department of Medical Oncology, Second Affiliated Hospital, Hainan Medical College, Haikou, China
| | - Meng Sen Li
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou 571199, Hainan Province, China
- Department of Medical Oncology, Second Affiliated Hospital, Hainan Medical College, Haikou, China
- Institution of Tumor, Hainan Medical College, Hiakou 570102, Hainan Province, China
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Chemotaxonomy and Antibacterial Activity of the Extracts and Chemical Constituents of Psychotria succulenta Hiern. (Rubiaceae). BIOMED RESEARCH INTERNATIONAL 2022; 2022:7856305. [PMID: 35757466 PMCID: PMC9217553 DOI: 10.1155/2022/7856305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/26/2022] [Accepted: 06/03/2022] [Indexed: 11/18/2022]
Abstract
The use of natural products for medicinal purposes is becoming more and more common nowadays, as evidenced by the presence in plants of secondary metabolites with different potentials such as antioxidant and antibacterial properties. We evaluated in this work the antimicrobial activities of the extracts and some isolated compounds from the seeds of Psychotria succulenta Hiern. (Rubiaceae), a Cameroonian medicinal plant traditionally used to cure microbial infections. The ethanol extract was prepared by maceration and extracted with ethyl acetate and n-butanol. The EtOAc (m = 168 g) and n-BuOH (m = 20 g) extracts were further fractionated by silica gel column chromatography to isolation of compounds. Their structures were elucidated by spectroscopic analysis and by comparison with published data. The antibacterial activity of extracts and compounds was assessed by evaluating the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against pathogenic bacteria. Thirteen compounds including four alkaloids (veprisine (1), naucleofficine III (2), vepridimerine B (3), and vepridimerine C (4)), three triterpenes (barbinervic acid (5), 3-O-α-L-rhamnopyranosyl quinovic acid (6), and oleanolic acid (7)), one steroid (β-sitosterol-3-O-β-D-glucopyranoside (8)), four phenolic compounds (scopoletin (9), gallic acid (10), quercetin-3-O-β-D-glucopyranoside (11), and kaempferol 3-O-α-L-rhamnopyranoside-7-O-α-L-rhamnopyranoside (12)), and one iridoid (borreriagenin (13)) were isolated from the EtOAc and n-BuOH extracts. These compounds were identified by 1D and 2D NMR combined analysis as well as by melting point comparison. The EtOH, EtOAc, and n-BuOH extracts exhibited significant antibacterial activities (MIC = 32‐128 μg/mL; MBC = 64‐256 μg/mL) against Staphylococcus aureus (Gram-positive bacterium), Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumonia (Gram-negative bacteria). Among the isolated compounds, scopoletin (9) showed a moderate activity against Klebsiella pneumoniae with MIC and MBC values of 16 μg/mL and 32 μg/mL, respectively. It appears that, chemotaxonomically, some of the isolated compounds have already been obtained from the genus Psychotria but to the best of our knowledge, this is the first report on the phytochemical investigation of P. succulenta. Although many other studies need to be achieved, our results support the use of P. succulenta in traditional medicine to cure infectious diseases particularly those caused by the tested bacteria.
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Nazari Formagio AS, Vilegas W, Ferreira Volobuff CR, Leite Kassuya CA, Paes de Almeida V, Manfron J, Pereira ZV, Pereira Cabral MR, Sarragiotto MH. Palicourea tomentosa (Aubl.) Borhidi: Microscopy, chemical composition and the analgesic, anti-inflammatory and anti-acetylcholinesterase potential. JOURNAL OF ETHNOPHARMACOLOGY 2022; 291:115050. [PMID: 35150816 DOI: 10.1016/j.jep.2022.115050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 01/12/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Palicourea tomentosa (Aubl.) Borhidi (synonym Psychotria poeppigiana Müll. Arg.) leaves are used in the popular treatments of inflammation and pain; however, there are no scientific studies demonstrating their activity as the methanolic extract of P. tomentosa. AIM OF STUDY This study was undertaken to investigate the potential antioxidant, anti-acetylcholinesterase, anti-hyperalgesic, anti-nociceptive and anti-inflammatory properties, as well as the chemical composition and concentrations of constituents of the methanolic extract of P. tomentosa leaves (MEPT). The study also analyzes the micromorphology and histochemistry of leaves of P. tomentosa. MATERIALS AND METHODS The MEPT was analysed by ultra-high-pressure liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS/MS). The concentrations of total phenols, flavonoids, flavonols and condensed tannin were determined. The micromorphology and histochemistry of leaves were performed using standard reagents, light and field emission scanning electron microscopy, beyond energy-dispersive X-ray spectroscopy. The antioxidant activity was evaluated for DPPH, β-carotene and MDA. The anti-inflammatory activity of MEPT (30, 100, and 300 mg/kg) was assayed in carrageenan-induced models of paw oedema, mechanical hyperalgesia (Von Frey), cold allodynia (acetone) and pleurisy in mice. The anti-nociceptive potential of MEPT (30, 100, and 300 mg/kg) was evaluated by the formalin method in mice. The anti-acetylcholinesterase properties were evaluated in vivo in four rat brain structures. RESULTS The total ion chromatogram of MEPT demonstrated two alkaloids, one coumarin, one iridoid and two terpene derivatives. The highest phenol, flavonoid, flavonol and condensed tannin concentrations were found in the extract. A comprehensive explanation of the leaf micromorphology and histochemistry was presented. MEPT was significantly inhibited by the DPPH, β-carotene and MDA models. MEPT (30, 100 and 300 mg/kg) reduced the inflammation and hyperalgesic parameters in a carrageenan model and reduced formalin-induced nociception in both phases, which were cold sensitivity and oedema formation. The oral administration of 30 and 100 mg/kg MEPT significantly inhibited AChE activity in the frontal cortex. CONCLUSION This is the first chemical and biological study performed with a P. tomentosa methanolic extract and anatomical and histochemical analysis. The present study showed that MEPT inhibited pain and inflammatory parameters contributing, at least in part, to explain the popular use of this plant as analgesic natural agent. Also, anatomical and histochemistry of leaves described in the present study provide microscopical information, which aids species identification.
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Affiliation(s)
| | - Wagner Vilegas
- Institute of Biosciences, UNESP - São Paulo State University, São Vicente, SP, Brazil
| | | | | | - Valter Paes de Almeida
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Jane Manfron
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Zefa Valdevina Pereira
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
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Lim HM, Park SH. Regulation of reactive oxygen species by phytochemicals for the management of cancer and diabetes. Crit Rev Food Sci Nutr 2022; 63:5911-5936. [PMID: 34996316 DOI: 10.1080/10408398.2022.2025574] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cancer and diabetes mellitus are served as typical life-threatening diseases with common risk factors. Developing therapeutic measures in cancers and diabetes have aroused attention for a long time. However, the problems with conventional treatments are in challenge, including side effects, economic burdens, and patient compliance. It is essential to secure safe and efficient therapeutic methods to overcome these issues. As an alternative method, antioxidant and pro-oxidant properties of phytochemicals from edible plants have come to the fore. Phytochemicals are naturally occurring compounds, considered promising agent applicable in treatment of various diseases with beneficial effects. Either antioxidative or pro-oxidative activity of various phytochemicals were found to contribute to regulation of cell proliferation, differentiation, cell cycle arrest, and apoptosis, which can exert preventive and therapeutic effects against cancer and diabetes. In this article, the antioxidant or pro-oxidant effects and underlying mechanisms of flavonoids, alkaloids, and saponins in cancer or diabetic models demonstrated by the recent studies are summarized.
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Affiliation(s)
- Heui Min Lim
- Department of Biological Science, Gachon University, Seongnam, Republic of Korea
| | - See-Hyoung Park
- Department of Bio and Chemical Engineering, Hongik University, Sejong, Republic of Korea
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Barbosa SM, Abreu NDC, de Oliveira MS, Cruz JN, Andrade EHDA, Menezes Neto MA, Cajueiro Gurgel ES. Effects of light intensity on the anatomical structure, secretory structures, histochemistry and essential oil composition of Aeollanthus suaveolens Mart. ex Spreng. (Lamiaceae). BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Samulski GB, Gontijo DC, Moreira NC, Brandão GC, Braga de Oliveira A. Dereplication of Palicourea sessilis ethanol extracts by UPLC-DAD-ESI-MS/MS discloses the presence of hydroxycinnamic acid amides and the absence of monoterpene indole alkaloids. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Psychotria leiocarpa Extract and Vincosamide Reduce Chemically-Induced Inflammation in Mice and Inhibit the Acetylcholinesterase Activity. Inflammation 2020; 42:1561-1574. [PMID: 31102122 DOI: 10.1007/s10753-019-01018-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Species from Psychotria are used in folk medicine against inflammatory diseases, respiratory disturbances, and anti-hallucinogenic. In the present study, the compound vincosamide (PL-1) was identified for the first time in methanolic extract of the Psychotria leiocarpa (ME-PL) leaves, as well as the anti-inflammatory and anticholinesteric effects in rodents and molecular docking simulations. The fractionation of the chloroform fraction (CF-PL) through chromatographic methods afforded the known compound PL-1. The anti-inflammatory activity of the ME-PL (30, 100, and 300 mg/kg) and PL-1 (3, 30, and 100 mg/kg) was analyzed using experimental models: paw edema, pleurisy, and mechanical and thermal hyperalgesia induced by carrageenan. The anticholinesterase activity of the ME-PL (30 and 100 mg/kg) and PL-1 (30 mg/kg) was showed by acetylcholinesterase (AChE) inhibitory in brain structures. The molecular docking simulations were performed using Molegro Virtual Docker v6.0. Overall, the results indicated that ME-PL and PL-1 demonstrated an anti-edematogenic effect in Cg-induced paw edema, leukocyte migration in the pleurisy model, and significantly reduced mechanical hyperalgesia, cold response to acetone in mice. The samples exhibited maximal inhibition of enzyme acetylcholinesterase (AChE) in the frontal cortex. The molecular coupling of PL-1 with the AChE showed significant interactions with the catalytic and peripheral site, corroborating the activity presented in the inhibition assay. The acute administration of ME-PL did not cause signs of toxicity in the treated animals. The results showed that P. leiocarpa inhibited AChE and anti-inflammatory activity, and alkaloid vincosamide could be responsible, at least in part, for the observed effects, supporting the popular use of this genus.
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Volobuff CRF, Junior PCO, Dos Santos SM, Pereira ZV, Ferreira DC, Cardoso CAL, Ruiz ALTG, Foglio MA, de Carvalho JE, Formagio ASN. Antitumoral and Anticholinesterasic Activities of the Seven Species from Rubiaceae. Curr Pharm Biotechnol 2019; 20:302-308. [PMID: 30747062 DOI: 10.2174/1389201020666190211154550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/30/2019] [Accepted: 02/05/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The genus Psychotria and Palicourea are reported as a source of alkaloids and iridoids, which exhibit biological activities. This study aimed to evaluate antiproliferative and anticholinesterase activities and quantification of the alkaloids of seven species among the genus found in Mato Grosso do Sul region in Brazil. METHODS Concentrations of alkaloids were measured spectrophotometrically. The extracts were submitted to antiproliferative activity against ten cell lines. The anticholinesterase activity of the extracts was developed using brain structures of male Wistar rats: cerebral cortex, hippocampus, hypothalamus and striatum by the Ellman method. RESULTS Alkaloids from Psychotria and Palicourea species were quantified which showed values of 47.6 to 21.9 µg/g. Regarding the antiproliferative potential, Palicourea crocea demonstrated selectivity against the 786-0 cell line (GI50: 22.87 µg/mL). Psychotria leiocarpa inhibited cell growth against OVCAR-3 (GI50: 3.28 µg/mL), K-562 (GI50: 5.26 µg/mL), HaCaT (GI50: 27.20 µg/mL), PC-3 (GI50: 34.92 µg/mL), MCF-7 (GI50: 35.80 µg/mL) and P. capillacea showed activity against OVCAR-3 (GI50: 2.33 µg/ml) and U251 (GI50: 16.66 µg/ml). The effect of acetylcholinesterase inhibition was more effective in the hippocampus, demonstrating inhibition for Paliourea crocea, Psychotria deflexa, P. brachybotrya and P. leiocarpa of 70%, 57%, 50% and 40%, respectively, followed by P. poeppigiana and P. capillacea, inhibiting 21%, compared to the control. CONCLUSION Herein, the present work showed for the first time, anticholinesterasic and antiproliferative activities of extracts of Palicourea and Psychotria seem to be mainly associated with the levels of alkaloids in the leaves of these species.
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Affiliation(s)
- Carla R F Volobuff
- Faculty of Health Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Pedro C O Junior
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Sidney M Dos Santos
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Zefa V Pereira
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Diego C Ferreira
- Department of Chemistry, State University of Mato Grosso do Sul, Dourados-MS, Brazil
| | - Claudia A L Cardoso
- Department of Chemistry, State University of Mato Grosso do Sul, Dourados-MS, Brazil
| | - Ana L T G Ruiz
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - Mary A Foglio
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - João E de Carvalho
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - Anelise S N Formagio
- Faculty of Health Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil.,Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
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Matsuura HN, Malik S, de Costa F, Yousefzadi M, Mirjalili MH, Arroo R, Bhambra AS, Strnad M, Bonfill M, Fett-Neto AG. Specialized Plant Metabolism Characteristics and Impact on Target Molecule Biotechnological Production. Mol Biotechnol 2018; 60:169-183. [PMID: 29290031 DOI: 10.1007/s12033-017-0056-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Plant secondary metabolism evolved in the context of highly organized and differentiated cells and tissues, featuring massive chemical complexity operating under tight environmental, developmental and genetic control. Biotechnological demand for natural products has been continuously increasing because of their significant value and new applications, mainly as pharmaceuticals. Aseptic production systems of plant secondary metabolites have improved considerably, constituting an attractive tool for increased, stable and large-scale supply of valuable molecules. Surprisingly, to date, only a few examples including taxol, shikonin, berberine and artemisinin have emerged as success cases of commercial production using this strategy. The present review focuses on the main characteristics of plant specialized metabolism and their implications for current strategies used to produce secondary compounds in axenic cultivation systems. The search for consonance between plant secondary metabolism unique features and various in vitro culture systems, including cell, tissue, organ, and engineered cultures, as well as heterologous expression in microbial platforms, is discussed. Data to date strongly suggest that attaining full potential of these biotechnology production strategies requires being able to take advantage of plant specialized metabolism singularities for improved target molecule yields and for bypassing inherent difficulties in its rational manipulation.
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Affiliation(s)
- Hélio Nitta Matsuura
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, UFRGS, Porto Alegre, RS, Brazil
| | - Sonia Malik
- Health Sciences Graduate Program, Biological and Health Sciences Center, Federal University of Maranhão, Avenida dos Portugueses, 1966, Bacanga, São Luís, MA, 65.080-805, Brazil
| | - Fernanda de Costa
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, UFRGS, Porto Alegre, RS, Brazil
| | - Morteza Yousefzadi
- Department of Marine Biology, Faculty of Marine Sciences and Technology, Hormozgan University, Bandar Abbas, Iran
| | - Mohammad Hossein Mirjalili
- Department of Agriculture, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Randolph Arroo
- Faculty of Health and Life Sciences, De Montfort University, The Gateway, Leicester, LE1 9BH, UK
| | - Avninder S Bhambra
- Faculty of Health and Life Sciences, De Montfort University, The Gateway, Leicester, LE1 9BH, UK
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Institute of Experimental Botany AS CR, Palacký University, Šlechtitelů 11, 783 71, Olomouc, Czech Republic
| | - Mercedes Bonfill
- Plant Physiology Laboratory, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Arthur Germano Fett-Neto
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, UFRGS, Porto Alegre, RS, Brazil.
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Tran PH, Le VD, Do TH, Nguyen TL, Nguyen PT, Nguyen TT, Nguyen TD. Anti-inflammatory constituents from Psychotria prainii H. Lév. Nat Prod Res 2017; 33:695-700. [PMID: 29212359 DOI: 10.1080/14786419.2017.1408095] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
One new and three known compounds were isolated from the ethanol extract of Psychotria prainii aerial parts. By means of spectroscopic methods, their structures were elucidated to be deacetylasperulosidic acid 6-ethyl ether (1), asperulosidic acid (2), asperuloside (3) and obtucarbamates C (4). The isolated compounds were evaluated for their inhibitory effect on NO production in LPS-stimulated RAW264.7 cells. Among them, compounds 2 and 4 exhibited strong effect with the IC50 values of 5.75 ± 0.85 and 6.92 ± 0.43 μM, respectively. This is the first report for the chemical composition and biological activity of P. prainii.
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Affiliation(s)
- Phi Hung Tran
- a Department of Phytochemistry , National Institute of Medicinal Materials , Hanoi , Vietnam.,b Department of Pharmacy , National Hospital of Traditional Medicine , Hanoi , Vietnam
| | - Viet Dung Le
- a Department of Phytochemistry , National Institute of Medicinal Materials , Hanoi , Vietnam
| | - Thi Ha Do
- a Department of Phytochemistry , National Institute of Medicinal Materials , Hanoi , Vietnam
| | - Thi Luyen Nguyen
- c Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi , Vietnam.,d Center for Research and Technology Transfer, VAST , Hanoi , Vietnam
| | - Phuong Thao Nguyen
- c Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi , Vietnam
| | - Trong Thong Nguyen
- e Department of Pharmacology , Hanoi Medical University , Hanoi , Vietnam
| | - Tien Dat Nguyen
- d Center for Research and Technology Transfer, VAST , Hanoi , Vietnam
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13C-NMR Spectral Data of Alkaloids Isolated from Psychotria Species (Rubiaceae). Molecules 2017; 22:molecules22010103. [PMID: 28085077 PMCID: PMC6155581 DOI: 10.3390/molecules22010103] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/09/2016] [Accepted: 12/28/2016] [Indexed: 12/02/2022] Open
Abstract
The genus Psychotria (Rubiaceae) comprises more than 2000 species, mainly found in tropical and subtropical forests. Several studies have been conducted concerning their chemical compositions, showing that this genus is a potential source of alkaloids. At least 70 indole alkaloids have been identified from this genus so far. This review aimed to compile 13C-NMR data of alkaloids isolated from the genus Psychotria as well as describe the main spectral features of different skeletons.
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Matsuura HN, Fett-Neto AG. Plant Alkaloids: Main Features, Toxicity, and Mechanisms of Action. PLANT TOXINS 2017. [DOI: 10.1007/978-94-007-6464-4_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Matsuura HN, Poth AG, Yendo ACA, Fett-Neto AG, Craik DJ. Isolation and Characterization of Cyclotides from Brazilian Psychotria: Significance in Plant Defense and Co-occurrence with Antioxidant Alkaloids. JOURNAL OF NATURAL PRODUCTS 2016; 79:3006-3013. [PMID: 28006906 DOI: 10.1021/acs.jnatprod.6b00492] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Plants from the genus Psychotria include species bearing cyclotides and/or alkaloids. The elucidation of factors affecting the metabolism of these molecules as well as their activities may help to understand their ecological function. In the present study, high concentrations of antioxidant indole alkaloids were found to co-occur with cyclotides in Psychotria leiocarpa and P. brachyceras. The concentrations of the major cyclotides and alkaloids in P. leiocarpa and P. brachyceras were monitored following herbivore- and pathogen-associated challenges, revealing a constitutive, phytoanticipin-like accumulation pattern. Psyleio A, the most abundant cyclotide found in the leaves of P. leiocarpa, and also found in P. brachyceras leaves, exhibited insecticidal activity against Helicoverpa armigera larvae. Addition of ethanol in the vehicle for peptide solubilization in larval feeding trials proved deleterious to insecticidal activity and resulted in increased rates of larval survival in treatments containing indole alkaloids. This suggests that plant alkaloids ingested by larvae might contribute to herbivore oxidative stress detoxification, corroborating, in a heterologous system with artificial oxidative stress stimulation, the antioxidant efficiency of Psychotria alkaloids previously observed in planta. Overall, the present study reports data for eight novel cyclotides, the identification of P. leiocarpa as a cyclotide-bearing species, and the absence of these peptides in P. umbellata.
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Affiliation(s)
- Hélio N Matsuura
- Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul , Porto Alegre, RS, Brazil
| | - Aaron G Poth
- Institute for Molecular Bioscience, The University of Queensland , Brisbane, QLD, Australia
| | - Anna C A Yendo
- Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul , Porto Alegre, RS, Brazil
| | - Arthur G Fett-Neto
- Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul , Porto Alegre, RS, Brazil
| | - David J Craik
- Institute for Molecular Bioscience, The University of Queensland , Brisbane, QLD, Australia
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Berger A, Preinfalk A, Robien W, Brecker L, Valant-Vetschera K, Schinnerl J. New reports on flavonoids, benzoic- and chlorogenic acids as rare features in the Psychotria alliance (Rubiaceae). BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.02.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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de Carvalho A, de Carvalho M, Braz-Filho R, Vieira I. Psychotria Genus. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63602-7.00007-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Porto DD, Matsuura HN, Vargas LRB, Henriques AT, Fett-Neto AG. Shoot Accumulation Kinetics and Effects on Herbivores of the Wound-Induced Antioxidant Indole Alkaloid Brachycerine of Psychotria brachyceras. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A major shoot-specific monoterpene indole alkaloid produced by Psychotria brachyceras, brachycerine, is regulated by either wounding or jasmonate application. Highest concentrations of the alkaloid are found in inflorescences, suggesting a defence role. Brachycerine has antimutagenic and antioxidant properties, capable of quenching singlet oxygen, hydroxyl radical, and superoxide. This study aimed at characterizing the putative role of brachycerine in P. brachyceras responses to wounding and herbivory. Damage to leaves increased the content of brachycerine locally. Wounding did not affect phenolics content in P. brachyceras leaves, and no tannins were detected in the species. In generalist herbivore bioassays, neither brachycerine nor P. brachyceras extracts showed toxic effects. In vivo hydrogen peroxide staining assay showed less wound-generated peroxide accumulation in alkaloid treated tissues. This pattern was confirmed in quantitative assays measuring tissue hydrogen peroxide concentrations. Data indicate that brachycerine is not a herbivore deterrent, but rather an indirect chemical defence, modulating oxidative stress caused by mechanical damage.
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Affiliation(s)
- Diogo D. Porto
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Hélio N. Matsuura
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lúcia R. B. Vargas
- Biotechnology Institute, Caxias do Sul University, Caxias do Sul, Brazil
| | - Amélia T. Henriques
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Arthur G. Fett-Neto
- Plant Physiology Laboratory, Center for Biotechnology and Department of Botany, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Matsuura HN, Rau MR, Fett-Neto AG. Oxidative stress and production of bioactive monoterpene indole alkaloids: biotechnological implications. Biotechnol Lett 2013; 36:191-200. [DOI: 10.1007/s10529-013-1348-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 09/06/2013] [Indexed: 12/11/2022]
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